CN205829166U - A kind of one-way conduction power control circuit - Google Patents

A kind of one-way conduction power control circuit Download PDF

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Publication number
CN205829166U
CN205829166U CN201620694055.1U CN201620694055U CN205829166U CN 205829166 U CN205829166 U CN 205829166U CN 201620694055 U CN201620694055 U CN 201620694055U CN 205829166 U CN205829166 U CN 205829166U
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CN
China
Prior art keywords
pipe
peft
effect transistor
channel field
load
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Active
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CN201620694055.1U
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Chinese (zh)
Inventor
仝兴孚
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PUYANG LIYUAN AUTO ELECTRIC Co Ltd
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PUYANG LIYUAN AUTO ELECTRIC Co Ltd
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Abstract

A kind of one-way conduction power control circuit, including housing, housing is provided with 3 binding posts, respectively negative terminal, positive input terminal and face terminals;Enclosure interior is provided with control circuit, it includes negative pin, positive pole input pin, load prongs, NPN audion and P-channel field-effect transistor (PEFT) pipe, negative pin electrical connection negative terminal, positive pole input pin electrical connection positive input terminal, load prongs electrical connection face terminals, the emitter stage of NPN audion connects positive pole input pin, base stage connects load prongs, colelctor electrode connects the grid of P-channel field-effect transistor (PEFT) pipe, and the drain electrode of P-channel field-effect transistor (PEFT) pipe connects load prongs, and source electrode connects negative pin.This utility model simple in construction, by arranging P-channel field-effect transistor (PEFT) pipe and NPN audion when load is connected correct with power supply, power supply just can be to load supplying, and the most not to load supplying, principle simply, implements more convenient installation cost cheap.

Description

A kind of one-way conduction power control circuit
Technical field
This utility model belongs to power supply control field, is specifically related to a kind of one-way conduction power control circuit.
Background technology
Load is powered when, need the existence of power supply, but some loads are easy to occur to connect anti- Phenomenon.In the prior art, to the common solution of anti-phenomenon waiting be by identification circuit identification load positive and negative, Realize load correct wiring.Complicated and relatively costly with the circuit that upper type relates to.
Utility model content
This utility model aims to provide simple in construction, one-way conduction power control circuit easy to use.
For solving above-mentioned technical problem, this utility model provides following technical scheme: a kind of one-way conduction power supply control Circuit processed, including negative pin, positive pole input pin, load prongs, NPN audion and P-channel field-effect transistor (PEFT) pipe, negative pin electricity Connect negative terminal, positive pole input pin electrical connection positive input terminal, load prongs electrical connection face terminals;
The emitter stage of NPN audion connects negative pin, and the base stage of NPN audion connects load prongs, NPN audion Colelctor electrode connects the grid of P-channel field-effect transistor (PEFT) pipe, and the drain electrode of P-channel field-effect transistor (PEFT) pipe connects load prongs, P-channel field-effect transistor (PEFT) pipe Source electrode connects positive pole input pin.
Being connected by anti-turning circuit between grid and the source electrode of P-channel field-effect transistor (PEFT) pipe, anti-turning circuit includes in parallel company The diode connect and the 4th resistance, the positive pole of diode connects the grid of P-channel field-effect transistor (PEFT) pipe, and the negative pole of diode connects P ditch The source electrode of road field effect transistor.
Connect between base stage and the load prongs of NPN audion and have the second resistance.
Connected by the first resistance between base stage and the emitter stage of NPN audion of NPN audion.
The emitter stage of NPN audion and the grid of P-channel field-effect transistor (PEFT) pipe are connected by the 3rd resistance.
By above technical scheme, the beneficial effects of the utility model are:
1.P channel field-effect pipe and NPN audion can turn on when load is connected correct with power supply, so that power supply To load supplying;The cut-off when load and power supply wiring mistake, so that power supply is not to load supplying.
2. the anti-turning circuit of diode and the 4th resistance composition is possible to prevent P-channel field-effect transistor (PEFT) pipe to be reversed electromotive force to hit Wear, thus ensure the normal table work of P-channel field-effect transistor (PEFT) pipe.
Connecting the second resistance between base stage and the load prongs of 3.NPN audion, NPN audion can be entered by the second resistance Row is effectively protected, and prevents overtension in the base stage of NPN audion, makes NPN triode operation stable, extends NPN audion Working life.
The base stage of 4.NPN audion and the emitter stage of NPN audion are connected by the first resistance, and on the one hand the first resistance exist Electric current is consumed when disconnecting by NPN audion, it is ensured that effective closedown of NPN audion;On the other hand, it makes NPN tri-pole Managing more anti-interference, service behaviour is more stable.
Connected by the 3rd resistance between emitter stage and the grid of P-channel field-effect transistor (PEFT) pipe of 5.NPN audion, the of setting Three resistance can realize the effect of dividing potential drop, prevents the voltage being added on the grid of P-channel field-effect transistor (PEFT) pipe excessive, P-channel field occurs The phenomenon that effect pipe cannot normally work.
Accompanying drawing explanation
Fig. 1 is this utility model circuit theory diagrams.
Detailed description of the invention
One-way conduction power control circuit as shown in Figure 1, including positive pole input pin B, negative pin A, load prongs C, NPN audion Q1 and P-channel field-effect transistor (PEFT) pipe Q2.
Control circuit described in the utility model is used for the power supply control to load supplying, and wherein load can be level etc. Need the element of charging.Connecting when, positive pole input pin B connects the positive pole of power supply, and negative pin A connects power supply respectively Negative pole and the negative pole of load, load prongs C connect load positive pole.
The emitter stage of NPN audion Q1 connects the emitter stage of negative pin A, NPN audion Q1 also by the first resistance R1 Connect the base stage of NPN audion Q1.Wherein electric current is consumed by the first resistance R1 mono-aspect when NPN audion Q1 disconnects, Ensure effective closedown of NPN audion Q1;On the other hand, it makes NPN audion Q1 more anti-interference, and service behaviour is more steady Fixed, in order to improve effect, the resistance of the first resistance R1 is 10 Ω ~ 30 Ω.
The base stage of NPN audion Q1 connects load prongs C by the second resistance R2, and the second resistance R2 can be to NPN tri-pole Pipe Q1 is effectively protected so that it is working stability, extends its working life, in order in order to be effective, and the resistance of the second resistance R2 It is 15 Ω ~ 25 Ω.
The colelctor electrode of NPN audion Q1 connects the grid of P-channel field-effect transistor (PEFT) pipe Q2, the 3rd of setting by the 3rd resistance R3 Resistance R3 can realize the effect of dividing potential drop, prevents the voltage being added on the grid of P-channel field-effect transistor (PEFT) pipe Q2 excessive, P-channel occurs Field effect transistor Q2 is phenomenon that is that cannot normally work because of breakdown.
The drain electrode of P-channel field-effect transistor (PEFT) pipe Q2 connects load prongs C, and the source electrode of P-channel field-effect transistor (PEFT) pipe Q2 connects positive pole input Pin B.Puncture to prevent P-channel field-effect transistor (PEFT) pipe Q2 to be reversed electromotive force, thus ensure that P-channel field-effect transistor (PEFT) pipe Q2's is normal steady Fixed work, connects between the grid and the source electrode of P-channel field-effect transistor (PEFT) pipe Q2 of P-channel field-effect transistor (PEFT) pipe Q2 and has anti-turning circuit, put Turning circuit includes that diode D and the 4th resistance R4, diode D and the 4th resistance R4 are connected in parallel.Wherein, diode D is just Pole connects the grid of P-channel field-effect transistor (PEFT) pipe Q2, and the negative pole of diode D connects the source electrode of P-channel field-effect transistor (PEFT) pipe Q2.When there being reverse electricity During kinetic potential, it can consume between the 4th resistance and diode, thus does not affect the normal work of P-channel field-effect transistor (PEFT) pipe Q2.
The when of work, positive pole input B and negative pin A connects positive pole and the negative pole of power supply respectively, the positive pole of load and Negative pole connects negative pin A and load prongs C respectively.
When line is correct, because having initial high level on the negative pole of load so that there is high level in load prongs C, Under the effect of the high level in load prongs C, NPN audion Q1 turns on;It is low level on the colelctor electrode of NPN audion Q1, Therefore be also low level on the grid of P-channel field-effect transistor (PEFT) pipe Q2;P-channel field-effect transistor (PEFT) pipe Q2 turns on, the electric current on positive pole input pin B Load prongs C is entered so that load prongs C is that the positive pole of load is powered, and negative pin A is negative by P-channel field-effect transistor (PEFT) pipe Q2 The positive pole carried is powered, thus is embodied as the purpose of load supplying.
When Miswire, the negative pole such as load connects load prongs C, the positive pole connection negative pin A of load, now, Because there being initial low level in load prongs C, NPN audion Q1 ends, and P-channel field-effect transistor (PEFT) pipe Q2 is also at cut-off state, electricity Load will not be powered by source, thus the safety of proof load.
Implementing when, load can be storage battery, and when using power supply to charge storage battery, only wiring is correct, and power supply is Can be charged storage battery, otherwise the P-channel field-effect transistor (PEFT) pipe Q2 in control circuit and NPN audion Q1 is in cut-off state, Storage battery will not be charged.
This utility model simple in construction, by arranging P-channel field-effect transistor (PEFT) pipe Q2 and NPN audion Q1 when loading with power supply even When connecing correct, power supply just can be to load supplying, and the most not to load supplying, principle is simple, implements more convenient, each yuan Part with low cost, thus reduce installation cost.

Claims (5)

1. an one-way conduction power control circuit, it is characterised in that: include negative pin, positive pole input pin, load prongs, NPN audion and P-channel field-effect transistor (PEFT) pipe;
The emitter stage of NPN audion connects negative pin, and the base stage of NPN audion connects load prongs, the current collection of NPN audion Pole connects the grid of P-channel field-effect transistor (PEFT) pipe, and the drain electrode of P-channel field-effect transistor (PEFT) pipe connects load prongs, the source electrode of P-channel field-effect transistor (PEFT) pipe Connect positive pole input pin.
2. one-way conduction power control circuit as claimed in claim 1, it is characterised in that: the grid of P-channel field-effect transistor (PEFT) pipe and Being connected by anti-turning circuit between source electrode, anti-turning circuit includes diode and the 4th resistance being connected in parallel, diode Positive pole connects the grid of P-channel field-effect transistor (PEFT) pipe, and the negative pole of diode connects the source electrode of P-channel field-effect transistor (PEFT) pipe.
3. one-way conduction power control circuit as claimed in claim 2, it is characterised in that: the base stage of NPN audion and load Connect between pin and have the second resistance.
4. one-way conduction power control circuit as claimed in claim 3, it is characterised in that: the base stage of NPN audion and NPN tri- Connected by the first resistance between the emitter stage of pole pipe.
5. the one-way conduction power control circuit as described in Claims 1-4 any one, it is characterised in that: NPN audion The grid of emitter stage and P-channel field-effect transistor (PEFT) pipe is connected by the 3rd resistance.
CN201620694055.1U 2016-07-05 2016-07-05 A kind of one-way conduction power control circuit Active CN205829166U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620694055.1U CN205829166U (en) 2016-07-05 2016-07-05 A kind of one-way conduction power control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620694055.1U CN205829166U (en) 2016-07-05 2016-07-05 A kind of one-way conduction power control circuit

Publications (1)

Publication Number Publication Date
CN205829166U true CN205829166U (en) 2016-12-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620694055.1U Active CN205829166U (en) 2016-07-05 2016-07-05 A kind of one-way conduction power control circuit

Country Status (1)

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CN (1) CN205829166U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110838838A (en) * 2018-08-15 2020-02-25 鸿富锦精密工业(武汉)有限公司 Power supply control circuit and electronic device using same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110838838A (en) * 2018-08-15 2020-02-25 鸿富锦精密工业(武汉)有限公司 Power supply control circuit and electronic device using same

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Unidirectional flux power control circuit

Effective date of registration: 20181105

Granted publication date: 20161221

Pledgee: Puyang Branch of Bank of China Joint Stock Company

Pledgor: PUYANG LIYUAN AUTO ELECTRIC CO., LTD.

Registration number: 2018990001029

PE01 Entry into force of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20201117

Granted publication date: 20161221

Pledgee: Puyang Branch of Bank of China JSC

Pledgor: PUYANG LIYUAN AUTO ELECTRIC APPLIANCE Co.,Ltd.

Registration number: 2018990001029

PC01 Cancellation of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: A control circuit of unidirectional conduction power supply

Effective date of registration: 20201126

Granted publication date: 20161221

Pledgee: Bank of China Limited by Share Ltd. Puyang branch

Pledgor: PUYANG LIYUAN AUTO ELECTRIC APPLIANCE Co.,Ltd.

Registration number: Y2020980008479

PE01 Entry into force of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20210930

Granted publication date: 20161221

Pledgee: Bank of China Limited by Share Ltd. Puyang branch

Pledgor: PUYANG LIYUAN AUTO ELECTRIC APPLIANCE Co.,Ltd.

Registration number: Y2020980008479

PC01 Cancellation of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: A unidirectional conduction power supply control circuit

Effective date of registration: 20211009

Granted publication date: 20161221

Pledgee: Bank of China Limited by Share Ltd. Puyang branch

Pledgor: PUYANG LIYUAN AUTO ELECTRIC APPLIANCE Co.,Ltd.

Registration number: Y2021980010459

PE01 Entry into force of the registration of the contract for pledge of patent right